RT Article T1 Firearm use increases risk of multiple victims in domestic homicides JF The journal of the American Academy of Psychiatry and the Law online VO 48 IS 1 A1 Kivisto, Aaron J. A1 Porter, Megan A2 Porter, Megan LA English YR 2020 UL https://krimdok.uni-tuebingen.de/Record/1912560496 DO 10.29158/JAAPL.003888-20